280 Mr. F. Walker on some undesaihed Ceylon Insects. 



by turns touching it, and as it were testing it. In the course 

 of a few minutes the lips had closed upon the atom, and it was 

 seen dilating the stomach as it slowly made its way downwards. 

 Sarcodictyon appears to me to approach very closely to the 

 Heliantho'id type. This genus on the one hand, and Zoantlius 

 on the other, are probably the links by which the two suborders 

 Alcyoniaria and Actiniaria are united, I have never had an 

 opportunity of examining Zoanthus, but think it probable that 

 isolated calcareous spicula will be found scattered in its tissues. 



EXPLANATION OF PLATE IX. 



Fig. a. Sarcodictyon catenata ; a single polype expanded. Magnified 



12 diameters. 

 Fig. h. The same, of the natural size. 

 Fig. c. A tentacular pinna. Magnified 85 diameters. 

 Fig. d. A pinna contracted and crushed flat between the plates of the 



compressorium. Magnified 250 diameters. 



Sandhurst, Torquay, Sept. 27th, 1858. 



XXX. — Characters of some apparently undescribed Ceylon In- 

 sects. By F. Walker. 



[Continued from p. 209.] 



Fam. Buprestidae. 



CiiRYSOBOTHRYS suTURALis. Cupreo-purpurasccns, subtus cyaneo- 

 viridis aurco iiitens, frontis lateribus thoracisque margine antico 

 auratis, elytris basi auratis, sutura cyaneo-viridi. Long. 4 lin. 



Agrilus sulcicollis. Nigro-seneus, thorace transverse sulcato, 

 elytris punctatis foveolatis, lateribus antice emarginatis. Long. 

 l| lin. 



Fam. Elateridae. 



Cardiophorus humerifer. Niger, capite, thorace et elytris basi 

 rufis, elytris punctato-liueatis, lutco bifaseiatis. Long. 3 lin. 



CoRYMBiTES DiviDENS. Rufa, Capita, antennis, thoracis vitta pos- 

 tice abbreviata, elytrorum triente apicali abdominisque apice nigris. 

 Long. 3^ lin. 



CoRYM BITES DiviSA. Rufa, pubcscens, capite, antennis, elytrorum 

 dimidio fere apicali abdomineque nigris. Long. 4^ lin. 



Athous I'UNCTOSus. Niger, dense pubescens, capite thoraceque 

 confertissiine ])unctatis, antennis pedibusque piceis, elytris punctato- 

 lineatis. Long. G lin. 



Athous inapertus. Niger, ferrugineo sordido dense tomentosus, 

 capite thoraceque subtilissimc ])inu'tutis, elytris punctato-liueatis, 

 pedibus rufescentibus. Long. 4 lin. 



