| Asp |
| Viper |
| Krait |
| Snake. |
| Abacus |
| Reptile |
| Serpent |
| Puff __ |
| Totalizer |
| Calculator |
| Asp cousin |
| Columnist? |
| Copperhead |
| Snaky CPA? |
| Sum seeker |
| Milk snake |
| Summer ___ |
| Small viper |
| Scary snake |
| Scary viper |
| Small snake |
| Figurehead? |
| Krait, e.g. |
| Abacus user |
| Deadly viper |
| Bill checker |
| Dread (anag) |
| Horned viper |
| Asp relative |
| Abacus, e.g. |
| Common viper |
| Snake variety |
| Hognose snake |
| Egyptian asp. |
| Summer snake? |
| Sort of snake |
| Kind of snake |
| Kind of viper |
| Type of snake |
| European viper |
| Venomous viper |
| Venomous snake |
| Abacus wielder |
| European snake |
| One doing sums |
| Office machine |
| Dangerous biter |
| Crawly creature |
| Dangerous snake |
| Poisonous snake |
| Calculator user |
| Hog-nosed snake |
| Math columnist? |
| Puffed-up snake |
| Slithery menace |
| Viper or summer |
| Snake, puff ... |
| Sort of serpent |
| Snake with venom |
| Venomous serpent |
| Venomous reptile |
| Puff ___ (viper) |
| Snake or machine |
| Milk snake, e.g. |
| Slithering biter |
| Snake, death ... |
| Dangerous reptile |
| Accountant, often |
| One of the vipers |
| Puff ____ (snake) |
| Crawler or summer |
| Terrestrial viper |
| Fer-de-lance's kin |
| Calculating person |
| Snake that counts? |
| Sum kind of snake? |
| This snake counts? |
| Calculating snake? |
| Mathematical snake? |
| Math pupil, at times |
| Rattlesnake's cousin |
| Summer at the office |
| Calculating reptile? |
| Calculator, at times |
| One summing things up |
| One using a plus sign |
| Scotland's only snake |
| One doing simple math |
| Certain venomous snake |
| Person finding a total |
| Hognose snake: puff ___ |
| One working on a column |
| Pocket calculator, e.g. |
| Snake (like an abacus?) |
| Viperidae family member |
| Puff ___ (hognose snake) |
| Macbeth" brew ingredient |
| Summer in the schoolroom |
| Puff ___ (snake variety) |
| Calculating one, at times |
| Puff ___ (venomous snake) |
| Relative of a rattlesnake |
| Reptile with a nasty bite |
| Snake with a puff variety |
| Snake of the viper family |
| Certain snake in the grass |
| Member of the genus Vipera |
| Puff ___ (poisonous snake) |
| Puff ___ (dangerous snake) |
| Snake in the grass, really |
| Snake in the grass, perhaps |
| Snake that bears live young |
| Snake or calculating person |
| Northern copperhead, for one |
| Britain's only venomous snake |
| Reptile with a zigzag pattern |
| Snake that's really sumthing? |
| Holmes's "speckled band," e.g. |
| Snake that gets total results? |
| Snake that sounds augmentative |
| Only poisonous snake in Britain |
| Reptile that's really sumthing? |
| Scotland's only poisonous snake |
| Snake that has many plusssssses |
| Snake that's good with numbers? |
| One putting two and two together |
| Holmes's "speckled band" was one |
| Venomous snake with zigzag markings |
| Snake that puts two and two together? |
| Viper, and a clue to this puzzle's theme |
| . . . stingeth like an ___": Proverbs 23:32 |
| The wily ___, blithe and glad": "Paradise Lost |
| The "band" in "The Adventure of the Speckled Band |
| The Black ___" (first of a Rowan Atkinson Britcom series) |