3°4 



The Scottish Naturalist. 



2. El. Bluish or bl.-gr. E. unif. p.-s. U.-s. of h.-b. 



often dusky at ba. 2 1. E. S. I. . 

 Wide. Bl. -b. E. with obsc. longi. cop. clouds. E. 

 with fine rows of puncs. which are obsc. near sut. 



3/2 -!■• X-rf« * • • • • • 



3. Ints. of e. glab. Puncs. in rows near sut. much finer 



than towards mar. ..... 



Rather broad ; sides rounded. Puncs. in all the rows 

 about equal, but in each row faint near ap. 2% 1. 



Not very wide. Ints. of e. finely punc. Puncs. in 

 rows near sut. much finer than towards mar. 3 1. 



4. Species dist. more than twice as long as wide and with 



only moderately rounded sides. 

 Not (or hardly) twice as long as wide. Sides strongly 

 rounded. Rows of puncs. on e. variable, but al- 

 ways fine ; those near sut. dist. the finest. Ap. of 

 e. rounded. 2^-31. E.S.I. !! . 



5. El.; sides nearly parallel. Rows of puncs. on e. 



strong, though finer near sut. Ap. of e. strongly 



rounded. 373-4 1- E N - .... 



Probably var. ofprec. Sides less parallel. Ap. ofe. 



less rounded. 



2%-VA 



■74-Js 



1. B. 



Apparently resembles bicolor but is wider, with more 

 rounded sides, and the ap. of e. almost quite straight. 



s 1. E. 



J 78 

 Not very broad/ B.-bl. Legs test. E. with regular 



rows of strong puncs. between which the ints. are 



often slightly conv. Ints. of £ glab. , of 9 punc. 



^•/Z 3/2 " - L - > * ..... 



Very like prec. Perhaps a var. Rows of puncs. on 

 e. finer : those near sut. finer than near mar. 2]^- 

 -> 1 "R 



Orechtochilus. 



Narrow. El. Finely punc. B. -brown. Densely pub. 

 U.-s reddish or test. 2^5 LB.. 



mmutus 



urinato7' 

 4 



Suffriani 



coly minis 

 5 



natator 



bicolor 

 distinctus 



casptus* 



marmus 



opacus 



villosus 



[ydrophilidae 



TABLE OF FAMILIES OF PHILHYDRIDA. 



1st j. of hi. tar. not longer than the rest — often very 

 small. [Species occurring in water.] 



1st j. of hi. tar. evidently the longest. Tib. with 

 numerous coarse spines. II. and th. thickly punc. 

 Species occurring in rotten vegetable matter, sea- 

 weed, manure, &c. ..... Sphseridiadse 



' I have never met with an authentic specimen (British or foreign) of this insect. Types 

 that I have seen do not answer to description. 



