80 • ADEPHAGA. [A?ichome7ii7ia. 



ridge in the Ancliomenina, but it is faintly elevated and not distinctly 

 continuous with the apical part of the margin. We possess six genera, 

 Calatlius, Tapliria, Splwdrus, Pristomjclnis, Ayichomeims and Olisfhojjus ; 

 Horn and C. G. Thomson include Masoreus, and its allied genera, as a 

 separate tribe Masoreina, forming a transition from the Ancliomenina to 

 the Lebiina. Mr. Bates, however, considers the Masoreina to be un- 

 doubted Truncatipennes, and to form a tribe under them equivalent to 

 the Lebiina, In a letter he kindly wrote to me on the subject he says, 

 "There are seven or eight genera of Masoreina, and an equal number of 

 allied generic forms having similar long tibial spurs, all undoubtedly 

 Truncatipennes. As to the query, 'Is Masoreus not a transition to 

 the Lebiina 1 ' I may say that there are many other genera of undoubted 

 Truncatipennes of which this may more truthfully be said, e.g. genera 

 of Thyreopterina, which are exactly like Ancliomenina, and can only be 

 distinguished by dissection of the mouth." 



Our genera may be distinguished as follows : — 



I. Tiirsal claws strongly pectinate or toothed. 



i. Thorax square or trapezoidal; first joints of middle and 

 posterior tarsi with a distinct furrow running along 

 their external surface CalathTJS, Bon. 



ii. 'Ihorax with sides rounded; joints of tarsi without 



furrow Tapheia, Bon. 



II. Tarsal claws with a slight trace of denticulation at base; 

 third joint of antinnnj shorter than the two following 



together ; tarsi pubescent PbistontchuS, Bej. 



III. Tarsal claws quite simple; tarsi not pubescent. 



i. Third joint of antennaj as long as the two following 



joints together ; length 20-24 mm SPHODEUS, Clairv. 



ii. Third joint of antennte shorter than the two following 



together; length not exceeding 11 mm., usually much 



less. 



1. Emargination of mentum with tooth Anchomenus, Bon. 



2. Euiargiuatiou of mentum without tooth .... Olisthopus, Bej. 



CAZiATKUS, Bonelli. 

 This genus comprises upwards of a hundred species, which are almost 

 entirely confined to the northern hemisphere ; they are mostly of a 

 black or brown colour ; they are usually found under stones, fallen 

 leaves, or moss, and at the roots of trees, and are exceedingly swift 

 runners, and very active in their movements. 



The larva of Calathus GalUcus is described, with coloured figure, by Laboulbene 

 (Ann. Fr. 1862, p. 562, PI. xiii., Fig. 8-15). It is elongate and depressed with all the 

 segments, including head, of about equal breadth, becoming slightly narrower towards 

 apex of abdomen ; the whole upper surface is black, the abdominal scuta being large 

 and covering the entire surface of the segments; the maxillaj, hibrum, and antenna? 

 are yellowish, and the legs ferruginous ; the cerci and anal appendage are short. 

 Length 21-22 mm. 



I. Male with the first three joints of the anterior tibiae 

 dilated and squamulose beneath, 

 i. p]lytra with a series of pores on the 3rd and 5th inter- 

 stices (or stria?) of elytra C, cisteloides, Panz. 



