8-i STAPHTi.iNiDiE, [Ilomalofa. 



Male with the apex of the dorsal plate of seventh segment a little 

 flattened on each side and obtusely pointed in middle, 



A common species under sea-weed on the coasts of England and Scotland, and 

 probably also of Ireland. 



The name H. atricilla, Er., is apparently now adopted for this species 

 on the Continent, but Dr. Sharp's reasons- for not adopting it (as given 

 I.e. p. 140) do not appear to have been refuted, Erichson's description not 

 agreeiiig with our types. 



ZSii alg'ae, Hardy {imncticeps, Thoms., Halohredha halensis, Muls. et 

 Key). Very like the preceding, with which it has been included by 

 some writers, but easily distingiiished liy its dark colour, more depressed 

 form, longer elytra, and rather liner but more distinct punctuation; it 

 also bears a resemblance to //. plumbea, with which it is found in 

 company, but is readily separated by the punctuation of the head and 

 general shape. L. 2-|-3 mm. 



]\rale with the apex of the dorsal plate of seventh segment truncate, 

 the truncate part narrow and with an indistinct projection in middle. 



Undersea-weed on the coast ; not uncommon in the south, but less common towards 

 the north. Scotland, local, Forth and Clyde districts. 



3S. princepsj Sharp. A rather large species, closely resembling 

 H. alfjce, and coloured like that species as a rule, but with the 

 elytra sometimes fuscous-brown; it is allied by the male characters to 

 H. alr/fe, and also by having the elytra comparatively longer than in 

 H. halohredha, and it is allied to the latter species by its punctuation, 

 -^"whieh is rather coarser than in the former species; the penultimate joints 

 of the antennae in H. i^'t'inceps are not so broad in proportion to their 

 length as in either of the other two. L. 4-4| mm. 



Very rai-e ; Ventnor, Isle of Wight ; [although I have worked this locality for 

 several years, I have only found three specimens j Southseaj Hayling Island (E. 

 Saunders), one specimen. 



The large size will at once distinguish this insect: I have a specimen 

 that measures nearly 5 mm., but the abdominal segments are a little 

 exserted. 



Group 7. 



This group is distinguished by having the head finely punctured or 

 nearly impunctate; it is, as Dr. Sharp remarks, a very artificial one, and 

 might well be divided into five or six others; this, however, would 

 complicate matters without affording a corresponding advantage; it would 

 perhaps be better to separate off the peculiar H. ccesula with its very 

 short elytra, and the dull black linear and parallel species H. nigeJla. 

 H. suhglabra bears a soinewhat close resemblance to H. paUcstris, near 

 which perhaps it might be more correctly placed. 



K. occulta, Er. {assimilis, Stcph., Bessohia ocmlta, Thoms.), 

 Euther narrow, black, or pitchy black with the elytra fuscous ; head 



