THE COLTDIIDiE OF JAPA:N". '79 



ventral segment, this latter as long as tlie two following together. 

 The legs are rather slender, the tibiae broader towards the ex- 

 tremity, but rounded off so as to become narrower at the apex. 

 E. pubens is more of the form of Gerylon, but has a shorter first 

 ventral segment and shorter legs, and its antennae have a less 

 elongate, only very obscurely annulate club. The genus is also 

 represented in Ceylon ; and the species found there confirm the 

 importance I have attached to the greater approximation of the 

 front coxae as a differential character from Gerylon * ; and they 

 have the prosternal process received into a more or less distinct 

 cavity of the mesosternum. 



ECTOMICKUS RUGICOLLIS, U, Sp. 



Rufo-piceus, antennis pedibusque rufis, superne setulis tenuissirais 

 brevibus erectis parcius vestitis ; prothorace densissime grosse piinctato, 

 interstitiis angustis; elytris fortiter seriatim punctatis. Long. 2\ millira. 



Antennae as long as head and thorax; second joint rather slender, 

 longer than broad, a little longer than the third joint ; joints 

 4-10 differing little from one another. Thorax transverse, a little 



* The following description of another genus of Cerylonini from the Andaman 

 Islands adds an insect of peculiar facies to the little group of genera constituting 

 this division. 



Pachylon, nov. gen. 



Corpus oblongum, subdepressum, nitidum. Antenna lO-articulatse, parum 

 elongates, crassas, articulo basali crassissimo, clava parum abrupta, elongata, 

 acuminata. Palpi maxillares articulo ultimo minuto, acuminato, labiales per- 

 approximati, articulo penultimo valde incrassato. Coxae anteriores parum 

 distantes, prosterni processus apiee reflexo. Coxae intermediae sat, posteriores 

 valde, distantes. Abdomen segmento primo basali magno, sequentibus tribus 

 fere majore. Tibice ad apicem paullo latiores, sed vix angulatie ; tarsi articulis 

 basalibus brevibus subtus setosis. 



Although very dissimilar iu appearance to Gerylon, this genus is closely allied 

 thereto, but can be distinguished by the different shape of the tibite, and by the 

 more approximate front coxge, the prosternal process also being bent upwards 

 immediately behind the cosse, instead of becoming broader and flat. 



Pachylon G-oehami, n. sp. 



Oblongus, nitidus, niger, antennis pedibusque piceis ; prothorace amplo, 

 transverso, lateribus valde rotundatis, versus latera fortiter punctato, sed ad 

 marginem ipsum impunctato ; scutello lato ; elytris regulariter seriatim punc- 

 tatis, interstitiis latis, impunctatis. Long. 5-6 millim. 



I have named this remarkable Colydiid in honour of the distinguished natu- 

 ralist, the Eev. H. S. Gorham, to v?hose kindness I am indebted for my specimens. 



Andaman Islands. 



