1863.] MR. J. Y. JOHNSON ON A NEW CORAL. 505 



EXPLANATION OF PLATES XL. & XLI. 



Fig. 1. Angasia pavonina (White). 

 C. Rostrum. 

 P. Pleon. 



h. Superior antennae. 

 b". Otolithc of ditto. 

 e. Liferior antennie. 



Fig. 1. d. Mandible. 



k. First pair of pereiopoda. 

 k'. Dactylos of ditto. 

 I. Second pair of pereiopoda. 

 ««. Posterior pair of pleopoda. 

 z. Telson. 



N.B. Tliese letters refer homologically to each animal alike, 



Fig. 2. Caradina truncifrotis. 



Fig. 3. cincinnuli. 



Fig. 4. tenuirostris. 



Fig. 5. Anchistia wsopia. 

 Fig. 6. Crangon irdermedius. 

 Fig. 7. Crabyzos longicaudatm. 



5. Description of a New Species of Flexible Coral be- 

 longing TO THE Genus Juncella, obtained at Madeira. 

 By James Yate Johnson, Corr. Mem. Z.S. 



Fam. Gorgonid^. 

 Sect. Gorgonellace^, Val. 



Juncella flagellum, sp. nov. 



Simple, elongated, slender, flexible, slightly twisted on its own 

 axis, and tapering upwards. Bark calcareous, white, smooth, and 

 impuncturate, enveloping a hard grey axis, which has a somewhat 

 polished surface marked with straight strise. This axis is so highly 

 charged with carbonate of lime that it effervesces in muriatic acid. 

 The coral is quadrangular in section, and has on each of the two 

 narrower sides two series of closely set papillae, having the eight 

 lobed orifices of polype-cells at their apices. These papillce are ob- 

 pyriform or ovate ; and in dried specimens they are turned ujiwards 

 and adpressed to the stem. Near the base of large specimens the 

 papillae are in three somewhat irregular rows. The other two sides 

 of the stem are free from papillae, but there is a slightly elevated line 

 along the middle. The base spreads out to a moderate extent upon 

 the object to which it is attached. The spicula, of which the bark 

 is composed, are tuberculated staves two or three times as long as 

 broad, the tubercles having a tendency to collect at the extremities. 



The longest example of this coral which I have seen, measured 

 about 7 feet in length ; and it was without its basal portion. The 

 greatest thickness was three eighths of an inch ; the largest papillae 

 were the tenth of an inch in length, and about the same across. In 

 another example, 5 feet in length, the base spread out to the size of 

 a shilling; and the papillae commenced about 3 inches above this basal 

 expansion. The smallest specimen that has occurred was 31 inches 

 long ; and this has been sent to the British INIuseum . In the col- 

 lection of that establishment there is a large stone with numerous 

 specimens of this coral upon it, alongside examples of Callogorgia 

 verticillaris, Gray (Primnoa verticillaris, M.-Edw.). These were 

 brought from St. Michael's, one of the Azores, and presented to the 

 Museum by Mr. M'^Andrew. 



I have ventured to assign this coral to the genus Juncella, Val., 



